okay so i just traded something on craigslist and got in return an avic-n1 unit with the power harness and audio harness. i wired it all up and it doesnt work. Nothing turns on, nada. as i am doing research i am discovering theese things called brains. Now i didnt get one of these 'brains' with the unit. My question is did i get traded a broken stereo or do i need that brain for the stereo to turn on/work/everything? Im new to this so this is probably a stupid question but please help, any advice will be much appreciated. Thanks everyone
Erich